摘要
内检测器的运行速度在输气管道无损检测过程中会影响数据检测的精度。针对内检测器运行速度调节问题进行研究,内检测器速度调节可以看作不同稳态条件下速度的变化。将漏磁内检测器与上下游气体视为一个整体,并根据流体力学原理分析了平稳状态下管道压力与内检测器运行速度之间的关系,建立了内检测器的压力-速度模型。通过所建立的压力-速度模型,计算出管道不同稳态条件下的内检测器速度,并以此作为内检测器速度调节的依据。通过在西气东输二线管道模拟运行表明该模型可以准确地计算出内检测器的运行速度并可以有效的进行速度调节。
The operation speed of in-pipeline detector will affect the accuracy of the data detection during non-destructive testing of gas pipeline. So speed regulation problem of in-pipeline detector is studied in this paper. The speed regulation of in-pipeline detector can be seen as the speed change under different steady states. In this paper, the in-pipeline detector and up-down stream gas are regarded as a whole. According to the principles of fluid mechanics, the relationship between the pipeline pressure and speed of in-pipeline detector is analyzed under stable state; and the pressure-speed model of in-pipeline detector is built. The speed of in-pipeline detector is calculated under different steady states based on the pressure-speed model, which is used as the basis of speed adjustment of in-pipeline detector. The results of simulation operation in the Second Pipeline of West-East natural gas pipeline show that the speed of in-pipeline detector can be accurately calculated and effectively adjusted with the proposed model.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2012年第11期2407-2413,共7页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60927004)
十二五国家科技部支撑计划(2011BAK06B01-03)资助项目
关键词
输气管道
内检测器
压力-速度模型
流场
速度调节
gas pipeline
in-pipe detector
press-speed model
flow field
speed adjustment
